558 Records of the Indian Museum. [Vol. VIII, 



as to its internal anatomy, I place it for the present at the end of 

 the series of Girasia." 



Parmarion ? rubrum, n. sp., plate ii, fig. 4. 



Original description. — " Animal of a fine orange pink, grey- 

 on under side of the foot ; tentacles short, mantle entirely cover- 

 ing the shell, with only a slight trace of a longitudinal opening 

 running back from the anterior left side, three parallel bands of 

 greenish grey along the back of the neck, the eye-tentacles being 

 of the same colour. The gland at extremity of foot with a long, 

 overhanging lobe. 



'' Extremity of foot to posterior end of mantle . . 09 in. 



Mantle . . . . . . . . cS ,, 



Anterior side mantle to head . . . . 04 ,, 



Total length when moving .. .. 0'8 ,, 



"Shell quite rudimentary, minute, granular (fig. 4b). Major 

 diam. 014 in. 



*' Hab. — Kohima, Naga Hills, in brushwood, under stones on 

 the hill slopes. 



'* The mucous gland in this species differs considerably from 

 that of Helicqrion gigas and its allies, the upper lobe projecting 

 and hanging over so as to present, when viewed sideways, a narrow 

 horizontal slit." 



In the Annals and Magazine of Natural History, Jan., 1891, 

 Mr. T. D. A. Cockerell pubHshed a paper "Notes on Slugs" ; on 

 p. 99 he gives a classification of the sub-family Helicarioninae, in 

 which several new sub-genera are intoduced. Section C is defined 

 by shell characters only as follows : — " shell slug-like, hardly or 

 not at all whorled," sub-sec. 2, "shell exposed by a hole in the 

 mantle only or entirely covered." 



a. Shell horny, exposed by a rather large aperture. Asiatic. 



XV, Girasia, Gray {G. hookeri, Gray). 



b. Shell oval, rudimentary, covered, animal like Girasia. 



XVI. Girasia^ sect. Cryptogirasiae (G. rubrum, G.A.). 



With regard to sub-sec. 2a. In life no hole is visible, its 

 size therefore is not a true character. The form of the shell lobes 

 is what should be described. Taking these combined with the 

 other external and internal characters, Girasia is a well-established 

 genus. 



Sub-sec. 2b. Cryptogirasia was founded on the drawings made 

 from life, referred to above by me, and out of the dried- up animal 

 I obtained by soaking, the small rudimentary shell. The animal 

 externally is not very like Girasia. 



No further specimens coming to hand, Cockerell 's genus was 

 recorded in the Fauna of British India, 1908, Mollusca I, p. 203. 

 I said then (p. 204) after the description of G. rubra, G.-A., "the 

 generic relations of this animal are doubtful." 



In my Presidential address to the Conchological Society of 

 Great Britain and Ireland, i6th Oct. 1909, " The Importance of 



